.btn{
    width:20px;
    height:20px;
    border-radius:50%;
    background-color: #000;
    color:#fff;
    font-size:20px;
    font-weight: bold;
    border:none;
    cursor: pointer;
    margin:5px;
}
.btn1{
    width:20px;
    height:20px;
    border-radius:50%;
    background-color: #ff0000;
    color:#fff;
    font-size:20px;
    font-weight: bold;
    border:none;
    cursor: pointer;
    margin:5px;
}
.btn2{
    width:20px;
    height:20px;
    border-radius:50%;
    background-color: #00ff00;
    color:#fff;
    font-size:20px;
    font-weight: bold;
    border:none;
    cursor: pointer;
    margin:5px;
}
.btn3{
    width:20px;
    height:20px;
    border-radius:50%;
    background-color: #ffdd00;
    color:#fff;
    font-size:20px;
    font-weight: bold;
    border:none;
    cursor: pointer;
    margin:5px;
}
.btn4{
    width:20px;
    height:20px;
    border-radius:50%;
    background-color: #0011ff;
    color:#fff;
    font-size:20px;
    font-weight: bold;
    border:none;
    cursor: pointer;
    margin:5px;
}
.btn5{
    width:20px;
    height:20px;
    border-radius:50%;
    background-color: #ff00c8;
    color:#fff;
    font-size:20px;
    font-weight: bold;
    border:none;
    cursor: pointer;
    margin:5px;
}
.btn6{
    width:20px;
    height:20px;
    border-radius:50%;
    background-color: #6600ff;
    color:#fff;
    font-size:20px;
    font-weight: bold;
    border:none;
    cursor: pointer;
    margin:5px;
}
